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【单选题】
关于卵巢激素的特点错误的是A.
属于甾体激素，都是通过同样基本途径合成，不同组织中酶系统的差别决定所合成的激素
B.
生物合成过程中从醋酸盐-胆醇-孕激素-雄激素-雌激素
C.
孕烯醇酮是雌、孕激素和雄激素前体
D.
卵泡内膜细胞中存在芳香化酶系统，能将颗粒细胞所分泌的雄激素转化为雌激素
E.
雌激素有潴留钠水、促进骨钙沉积作用，孕激素有使体温轻度升高作用
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【单选题】虚拟语气 He ____busy yesterday, or he ___you with your experiment. A. was, had helped B. was, would have helped C. had been, would have helped D. were, would have helped
A.
was, had helped
B.
was, would have helped
C.
had been, would have helped
D.
were, would have helped
【简答题】(1)创建集合A,包含元素为"1"、"2"、"3" (2)创建空集合B (3)使用字符串“1234”创建集合C (4)实现集合A、C间的基本操作:交集C&A、并集C|A、差集C-A、补集C^A (5)将数据项“2”增加到集合B中 (6)返回集合C的一个副本,赋值给D (7)随机返回集合D中的一个元素 (8)返回集合A中的元素个数 (9)判断数据项“2”是否在集合C中 (10)移除集合A中的所有数据...
【单选题】An error of commission is one where:
A.
A transaction has not been recorded
B.
One side of a transaction has been recorded in the wrong class of account, such as non-current assets posted to inventory
C.
An error has been made in posting a transaction
D.
The digits in a number are recorded the wrong way round
【单选题】Suppose the ordinary user 'user1' has a file 'ABC' in the current directory and he wants to execute this file. But when type 'ABC' at the '$' prompt. The system reports an error. So the possible reaso...
A.
(1)
B.
(1) (2)
C.
(2) (3)
D.
(1) (2) (3)
【单选题】Exhibit， error You work as a database administrator for Supportcenter.cn. When you try to connect to the database， you get an error （See exhibit）. What could be the possible reason for getting such an...
A.
Database is not open
B.
Listener is not running
C.
Service name is not correct
D.
Wrong port number used in URL
E.
Usersysdoes have themediaprivilege
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